In my head:
Pittsburgh 30, Arizona 17
The Cardinals get off to a hot start courtesy of Kurt Warner to Larry Fitzgerald and lead 17-3 early in the second quarter. However, the Steelers get on track, the defense starts getting to Warner and the Steelers rattle off 27 unanswered points. Troy Polamalu wins the Super Bowl MVP award with 11 tackles, a sack, an interception and incredible intimidation of Arizona's receivers.
In my heart:
Arizona 24, Pittsburgh 20
The Cardinals set the tone with their first possession, surprisingly turning to Edgerrin James, who runs eight times for 40 yards, culminating in a four-yard scoring pass from Warner to Fitzgerald. Pittsburgh answers back, but the Cardinals have gotten into Pittsburgh's head with their surprising run prowess. Warner then does the rest, finishing the day with three touchdowns, 357 passing yards and a Super Bowl MVP trophy in Arizona's shocking victory.